Carburetor attachment for explosive engines



W. A. SMITH.

CARBURETOR ATTACHMENT FOR EXPLOSIVE ENGINES.

APPLICATION FILED MAY 14. 1920.

mmsw Patented 0013.17,]1922.

ATTORNEY WITNESS:

Patented @ct. l7, 1%22.

entree I stares Parent enema.

WILLIAM ANDREW SMITH, 0F CODELL, KANSAS, ASSIGNOR 01F ONE-HALF '10 EMMETT A. BRUMITT, 0F CODELII, KANSAS.

CARBURETOR ATTACHMENT FOR EXPLOSIVE ENGINES.

Application filed may 14,

This invention relates to improvement in internal combustion engines and has for an object the provision of means for increasing the efliciency of the engine by providlng a more perfect explosive mixture.

To this end, the invention contemplates the provision of an attachment, which may be secured to the engine for the purpose of heating the air 'drawn into the carburetor, provision being made whereby cold air may be admitted for mixture with the heated air or the cold air entirely excluded to suit the conditions under which the engine is operating, the regulation of the air being entirely under control of the operator.

With the above and other objects in view, the invention includes the following novel features and details of construction, to be hereinafter more fully described, illustrated in the accompanying drawings and pointed out in the appended claims.

In thedrawings:-

Fig. 1 is a fragmentary elevation illustrating the application of the invention.

ig. 2 is an enlarged fragmentary eleva= v tion of the invention per se.

' regulating Fig. 3-is a view similar to Figure 2 but showing the cold air inlet open.

Fig. 4 is a bottom view with the parts in the position shown in Figure 2. Fig. 5 is a similar view with the parts in the position shown in Figure 3.

Referring to the drawings in detail, the invention is shown as applied to the carburetor of an internal combustion engine used for the purpose of operating a vehicle The carburetor is shown at 10, the intake manifold at 11, the exhaust manifold at 12 and'a Era entary portion of the vehicle at 13. he invention which resides in means for the air to the carburetor includes a conductor-pipe 1t one end of which is exposed to the heat of the exhaust and for this purpose is in engagement with the exhaust manifold 12 as shown at 15. The opposite end of the conductor pipe 14 communicates with the air inlet 16 of the carburetor for the purpose of supplying heated air to the ure 5. The spring thus serves to yieldingly hold a valve in either closed or open position.

1920. Serial no; 381,495.

mixin chamber to increase the eficiency of the mixture when desired.

The conductor ipe '14 is also provided with a cold air in et 17 which is controlled by a valve 18 of the butterfly type. The stem of this valve extends through the pipe and has secured thereto an arm 19, the latter extendlng upon opposite sides of the valve stem as shown in Figures 4 and 5. Connected to one end of the arm 19 as shown at 20, 15 one end of a spring 21, the opposite end of thls spring being connected to the conductor pipe at a point to one side of thestem of the valve 18 as shown at 22. By this means, the valve may be yieldingly held under spring tension in either a closed or open position and when in closed position the valve will be engaged by a stop 23 located within the cold air inlet 17 to limit the movement of the valve in one direction. When in an open position one end of the arm 19 will be engaged by a stop 24 which projects from the conductor-pipe, the position of the arm, valve and spring being clearly illustrated in- Fig- The stem of the valve projects upwardly through the floor of the vehicle as indicated at 25 and passes through a suitable bearing bracket 26 and terminating in a handle 27. The driver of the vehicle may thus open or close the valve 18 to admit a'supp-ly of cold air or entirely out ofi such cold air supply when desired.

The invention is susceptible of various changes in its form, proportions and minor details of construction and the right is herein reserved to make such changes as properly fall within the scope of the appended claim. at

Having described the invention what is claimed is The combination with an internal combustion engine, of a conductor pipe having one end exposed to the heat of the engine nee exhaust and its opposite end connected with the air inlet of the engine carburetor, a cold air inlet provided for said conductor pipe,

a valve stem controllin said valve and extending through the pipe, an arm secured ice to said stem and extending upon opposite sides of the latter, a spring having one end connected with said arm, the opposite. end thereof connected to the conductor pipe at n a point to one side of the valve stem, said no msaeeo open Position, the stem of the valve projecting upwardly through the floor of the vehicle, a bearing bracket receiving said valve stem at this point, a handle provided by the termination of the stem at the upper end thereof.

In testimony whereof I alfii! my signature. 15

' WILLIAM ANDREW SMITH. 

